CSV Injection in Newsletter - #VU26163

Detailed vulnerability description

The vulnerability allows a remote attacker to inject arbitrary code into CSV files.

The vulnerability exists due to insufficient sanitization of user-supplied data when constructing CSV files in the subscription form. A remote authenticated attacker can inject malicious data into the contact form fields that is used later by the plugin to generate CSV files. Such files can be opened with Microsoft Excel built-in functions and utilize its functionality to execute malicious macros.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Remediation

Sources

• https://wpvulndb.com/vulnerabilities/10135/
• https://fortiguard.com/zeroday/FG-VD-20-045